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Mol Med Rep:II型瓦登伯革氏综合症家庭中SOX10基因的一个新的显性变异研究

2019-01-19 AlexYang MedSci原创

II型瓦登伯革氏综合症(WS2)是一种稀有的遗传障碍,可以通过明亮的蓝眼睛、中度到永久性听力损失以及皮肤和毛发的颜色的异常来进行鉴定。在SRY-box(SOX10)基因中,已经鉴定的10个到20个变异与WS2相关。最近,有研究人员在一个中国家庭中鉴定了WS2的遗传病因。研究人员通过临床和分子分析遗传上鉴定了该家庭具有2个WS2案例。渊源者的临床数据通过调查问卷的方式来收集。另外,还从该家庭每个成员

II型瓦登伯革氏综合症(WS2)是一种稀有的遗传障碍,可以通过明亮的蓝眼睛、中度到永久性听力损失以及皮肤和毛发的颜色的异常来进行鉴定。在SRY-box(SOX10)基因中,已经鉴定的10个到20个变异与WS2相关。最近,有研究人员在一个中国家庭中鉴定了WS2的遗传病因。

研究人员通过临床和分子分析遗传上鉴定了该家庭具有2个WS2案例。渊源者的临床数据通过调查问卷的方式来收集。另外,还从该家庭每个成员中抽取了外周血样,并提取DNA用于二代和Sanger测序。研究人员发现,在渊源者和母亲中,SOX10基因的第二个外显子上存在一个无义变异(碱基替换;位置127;胞嘧啶到胸腺嘧啶(c.127C>T))。然而,在其他家庭成员或者健康对照中不存在。该新的咋个变异可能引起了第43个密码子的替换,且是替换成了终止密码子,从而导致了蛋白的过早停止。

最后,研究人员指出,SOX10基因中该新的无义杂合突变c.127C>T被认为与WS2相关。另外,该基因在任何数据库中均没有鉴定。

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    2019-10-23 周虎
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    2019-01-26 jyzxjiangqin

    瓦登伯革氏综合征。

    0

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